Simultaneous particles influence on the LAGO's Water Cherenkov Detectors signals

L. OTINIANO; M. SUAREZ DURAN; C. SARMIENTO CANO; H. ASOREY; I. SIDELNIK

Berlin

Congreso; 37th International Cosmic Ray Conference; 2021

The Latin American Giant Observatory (LAGO), operates an extensive network of WaterCherenkov Detectors (WCD) by a non-centralized and collaborative network of Universities andResearch Institutes in Iberoamerica. To estimate the charge distribution produced by secondariesparticles interacting with WCDs, LAGO developed a simulation framework (ARTI). ARTI com-prises a chain of simulations that starts with the well known primary flux of galactic cosmic raysthat reach Earth and finish estimating the expected WCDs signals at any site on ground.Based on the first stage of ARTI, that uses COSIKA to simulate the expected flux of secondariesthat reach LAGO sites, we re-analyze this flux searching for simultaneous particles reaching thedetectors. We perform a spatial analysis of CORSIKA?s simulated air showers in the field of viewof four typical WCD in extreme sites of the LAGO network and in time windows of the electronicacquisition system.We have found that simultaneous particles reaching the WCD modify the deposited energy dis-tribution into the detector even for low energy range and low altitude sites, compared with theprevious single-particle approach. This result impacts the WCD?s calibration and could play animportant role in discri